Visible display attachment for measuring pumps



W. S. TOWNSEND ET AL VISIBLE DISPLAY ATTACHMENT FOR MEASURING PUMPSFiled June 12, 1922 I Patented Apr. 16, 1923.

UITE STATES asai rarest tries.

WILLIAM S. TOWNSEND AND FRANK IE. DOUGLASS, OF ROCHESTER, PENNSYLVANIA.

VISIBLE DISPLAY ATTACHMENT FOR MEASURING PUMPS.

Application filed June 12, 1922. Serial No. 567,836.

To allwhomitmag concern:

Be it known that we, WILLIAM S. TOWN- SEND and FRANK E. DOUGLASS,citizens of the United States, residin at Rochester, in the county ofBeaver and i tate of Pennsylvania,

have invented certain new and useful Improvements in Visible DisplayAttachments for Measuring Pumps, of which the following is aspecification.

Our invention relates to dispensing apparatus.

The object of'the invention is to provide an attachment particularlyadapted for oil measuring and dispensing pumps; said at- 16 tachmentcomprising a visible container which may first be filled only from thepump to display the oil to the purchaser; the visible containerbeingkept filled and not emp 'tied of its contents by the action of the pump.

Fig. 1 is a perspective of an oil tank and measuring pump with ourvisible container attachment applied.

Fig. 2 is a vertical section of the visible container.

The supply tank is indicated at 1, and the pump 2 is mountedon topthereof and provided with a horizontal discharge pipe 3. The attachment4 comprises a cylindrical glass container 5 closed at its lower end by acup-like base 6 having a seat 7 and washer 8. The base 6 has a lateralinlet nipple 9 coupled to the discharge pipe 3 and an outlet nipple 10in its bottom into which screws the threaded upper end of the discharge5 nozzle 11.

The discharge nozzle 11 is provided with a valve seat 12 and an upwardlyclosing check valve 13, the depending stem 14 of which passes through anapertured crossbar 15. A spring 16 mounted on the stem 1 1 between thevalve 13 and crossbar holds the valve to its seat under normalconditions.

Across the upper part of the cap 6 extends a crossbar or spider 17having a central threaded boss 18 into which is threaded the lower endof a central rod 19, the upper end of which extends-through a centralopening in a cap or cover 20 and is provided with a suitable nut 21 sothat the base 6 and cap 20 are secured firmly upon the ends of thevisible container 5. The cap has an annular seat 21 and washer 22 forthe upper end of the container so that it is air-tight.

The cap or cover 20 is provided with an inwardly opening vent valve 23normally closed by its spring 24 and provided with an exposed stem 25preferably concealed by a screw cap26. An ordinary tire valve will servethe purpose.

The operation is as follows. The operator first opens the vent valve 23and then operates the measuring pump 2, whereupon the oil from tank 1will flow through discharge pipe 3 and up into the lass container 5; thevalve 13 remaining closed. As soon as the container. 5 is filled thevent valve 23 will be released and closed by its spring. The contents ofthe container 5 will now be visible to prospective purchasers and mustnecessarily be of the same kind as that in the supply tank 1.

Having thus filled the visible container from tank 1, the oil pump 2will thereafter fulfill its ordinary function of delivering a measuredquantity of oil as per the sample in the visible container, since theforce of the flow will open the outlet valve 23 and the pressure will,in connection with the closed vent valve 23, prevent the emptying of thevisible container. I

In other words, the glass container will always be filled with the sameoil as that being measured and dispensed by the pump 2 and after havingbeen once filled will not interfere with the How of measured liquid fromthe pump 2.

Obviously, the construction may be variously modified without departingfrom the spirit of our invention.

What we claim is:

1. A visible display attachment for pumps comprising a visible containerhaving an in.- let for connecting it with the discharge side of a pump,a closable vent to permit the container to be filled from the pump andthen closed to prevent outflow of the corn tents, a discharge nozzle,and a normally closed outwardly opening discharge valve subject to thepressure from the inlet and past which the liquid may flow to thedischarge nozzle without discharging the contents of the container.

2. A visible attachment for pumps comprising a visible containerprovided with connected cap and base, a closable vent in the cap, aninlet in the base for connection with a pump outlet. a discharge nozzle,an upwardly closing check valve controlling said discharge nozzle andadapted to remain closed when the vent is opened for filling thecontainer from the pump and during the cessation of flow through saidinlet and to open only under the pressure exerted by liquid pumpedthrough theinlet after the container has been first filled and its ventclosed.

1 3. A visible display attachment for pumps comprising a visiblecontainer having an inlet for connecting it with the discharge side of apump, a normally closed vent to pre vent outflow of the contents of thecontainer 10 when filled, means operable from the exterior of thecontainer to open the vent to permit the filling of the container fromthe pump, a discharge nozzle, and a discharge valve past Which, whenopen, the liquid may flow through the discharge nozzle Withoutdischarging the contentsof the container.

In testimony whereof We aflix our signa- WILLIAM S. TOWNSEND. FRAN it,E. DOUGLASS.

